.parent{
    background-color: orange;
    padding: 10px;
    width: 500px;
}
.child{
    background-color: orchid;
    padding: 10px;
}
.grand{
    background-color: royalblue;
    padding: 10px;
}
.grands{
    background-color: salmon;
    padding: 10px;
}